ARM: 7914/1: amba: Drop legacy PM support and use the pm_generic functions

[firefly-linux-kernel-4.4.55.git] / drivers / amba / bus.c

diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index c4876ac9151a56bc95a05df647e0850cea3182c4..b90dc1ec109d9157834e40fa5ae57802208debdc 100644 (file)
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -83,162 +83,6 @@ static struct device_attribute amba_dev_attrs[] = {
        __ATTR_NULL,
 };
 
-#ifdef CONFIG_PM_SLEEP
-
-static int amba_legacy_suspend(struct device *dev, pm_message_t mesg)
-{
-       struct amba_driver *adrv = to_amba_driver(dev->driver);
-       struct amba_device *adev = to_amba_device(dev);
-       int ret = 0;
-
-       if (dev->driver && adrv->suspend)
-               ret = adrv->suspend(adev, mesg);
-
-       return ret;
-}
-
-static int amba_legacy_resume(struct device *dev)
-{
-       struct amba_driver *adrv = to_amba_driver(dev->driver);
-       struct amba_device *adev = to_amba_device(dev);
-       int ret = 0;
-
-       if (dev->driver && adrv->resume)
-               ret = adrv->resume(adev);
-
-       return ret;
-}
-
-#endif /* CONFIG_PM_SLEEP */
-
-#ifdef CONFIG_SUSPEND
-
-static int amba_pm_suspend(struct device *dev)
-{
-       struct device_driver *drv = dev->driver;
-       int ret = 0;
-
-       if (!drv)
-               return 0;
-
-       if (drv->pm) {
-               if (drv->pm->suspend)
-                       ret = drv->pm->suspend(dev);
-       } else {
-               ret = amba_legacy_suspend(dev, PMSG_SUSPEND);
-       }
-
-       return ret;
-}
-
-static int amba_pm_resume(struct device *dev)
-{
-       struct device_driver *drv = dev->driver;
-       int ret = 0;
-
-       if (!drv)
-               return 0;
-
-       if (drv->pm) {
-               if (drv->pm->resume)
-                       ret = drv->pm->resume(dev);
-       } else {
-               ret = amba_legacy_resume(dev);
-       }
-
-       return ret;
-}
-
-#else /* !CONFIG_SUSPEND */
-
-#define amba_pm_suspend                NULL
-#define amba_pm_resume         NULL
-
-#endif /* !CONFIG_SUSPEND */
-
-#ifdef CONFIG_HIBERNATE_CALLBACKS
-
-static int amba_pm_freeze(struct device *dev)
-{
-       struct device_driver *drv = dev->driver;
-       int ret = 0;
-
-       if (!drv)
-               return 0;
-
-       if (drv->pm) {
-               if (drv->pm->freeze)
-                       ret = drv->pm->freeze(dev);
-       } else {
-               ret = amba_legacy_suspend(dev, PMSG_FREEZE);
-       }
-
-       return ret;
-}
-
-static int amba_pm_thaw(struct device *dev)
-{
-       struct device_driver *drv = dev->driver;
-       int ret = 0;
-
-       if (!drv)
-               return 0;
-
-       if (drv->pm) {
-               if (drv->pm->thaw)
-                       ret = drv->pm->thaw(dev);
-       } else {
-               ret = amba_legacy_resume(dev);
-       }
-
-       return ret;
-}
-
-static int amba_pm_poweroff(struct device *dev)
-{
-       struct device_driver *drv = dev->driver;
-       int ret = 0;
-
-       if (!drv)
-               return 0;
-
-       if (drv->pm) {
-               if (drv->pm->poweroff)
-                       ret = drv->pm->poweroff(dev);
-       } else {
-               ret = amba_legacy_suspend(dev, PMSG_HIBERNATE);
-       }
-
-       return ret;
-}
-
-static int amba_pm_restore(struct device *dev)
-{
-       struct device_driver *drv = dev->driver;
-       int ret = 0;
-
-       if (!drv)
-               return 0;
-
-       if (drv->pm) {
-               if (drv->pm->restore)
-                       ret = drv->pm->restore(dev);
-       } else {
-               ret = amba_legacy_resume(dev);
-       }
-
-       return ret;
-}
-
-#else /* !CONFIG_HIBERNATE_CALLBACKS */
-
-#define amba_pm_freeze         NULL
-#define amba_pm_thaw           NULL
-#define amba_pm_poweroff               NULL
-#define amba_pm_restore                NULL
-
-#endif /* !CONFIG_HIBERNATE_CALLBACKS */
-
 #ifdef CONFIG_PM_RUNTIME
 /*
  * Hooks to provide runtime PM of the pclk (bus clock).  It is safe to
@@ -272,15 +116,13 @@ static int amba_pm_runtime_resume(struct device *dev)
 }
 #endif
 
-#ifdef CONFIG_PM
-
 static const struct dev_pm_ops amba_pm = {
-       .suspend        = amba_pm_suspend,
-       .resume         = amba_pm_resume,
-       .freeze         = amba_pm_freeze,
-       .thaw           = amba_pm_thaw,
-       .poweroff       = amba_pm_poweroff,
-       .restore        = amba_pm_restore,
+       .suspend        = pm_generic_suspend,
+       .resume         = pm_generic_resume,
+       .freeze         = pm_generic_freeze,
+       .thaw           = pm_generic_thaw,
+       .poweroff       = pm_generic_poweroff,
+       .restore        = pm_generic_restore,
        SET_RUNTIME_PM_OPS(
                amba_pm_runtime_suspend,
                amba_pm_runtime_resume,
@@ -288,14 +130,6 @@ static const struct dev_pm_ops amba_pm = {
        )
 };
 
-#define AMBA_PM (&amba_pm)
-
-#else /* !CONFIG_PM */
-
-#define AMBA_PM        NULL
-
-#endif /* !CONFIG_PM */
-
 /*
  * Primecells are part of the Advanced Microcontroller Bus Architecture,
  * so we call the bus "amba".
@@ -305,7 +139,7 @@ struct bus_type amba_bustype = {
        .dev_attrs      = amba_dev_attrs,
        .match          = amba_match,
        .uevent         = amba_uevent,
-       .pm             = AMBA_PM,
+       .pm             = &amba_pm,
 };
 
 static int __init amba_init(void)